Improvement if



109. SATES, BANK PDDTECTTDN l Search Room.

y AND RELATED DEvTcEs.

@glatten tatrs 332mm' @frn IMPROVEMENT IN FILLING FOR SAIES.

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T0 ALL WHOM IT MAY CONCERN:

Be it known that I, I-IEZEKIAH II. BRYANT, of the city of Boston, countyof Suffolk, and Stato of Massa.- cliusctts, have invented a new andimproved Filling for Fire or Burglar-Proof' Safes and I do herebydeclare the following to be a full and correct description of the same,reference being had to the accompanying drawing, and the letters ofreference marked th'ereon` making a part of this specification.

The accompanying drawing represents 'a vertical section ot` a safecommonly termed steam fire-proof," which is used to lillustrate myinvention, as safes of this kind are the most open to a successfulattack by burglars.

In the drawing shown, A represents the exterior surface of such a safe,B its air or steam-chamber, C its water-chambers or vessels, D the ventsconnecting said watervesscls or chambers with said air or steam-chamber.

It is well known that the mode of attack upon a safe usually adopted byburglars is that of drilling or boring holes or chambers therein, whichare charged with powder or other explosive material, which, whenexploded, serves to make an opening in the structure suitable for theirpurposes, so that safes provided with steel chests or vaults are notproof against such attacks, as that part of the structure is both smalland light enough toipermit of its being easily carried away and openedat leisure so soon as it is freed from thecase enclosing it, which isaccomplished by the means just mentioned.

My invention consists ofthe use of sponge, or any other article of asimilar porous and absorbent nature, in combination with any liquidplaced in the chambers between the several walls of a safe, the whichcfeetually prevents said chambers from being emptied of the liquidcontained therein by means of boring or drilling into said chambers, asthe sponge will retain enough thereof to dampen and thereby destroy anycharge of powder or other similar material that may be introducedtherein.

l* In 'that kind of a. safe shown in the accompanying drawing, Iintroduce into the-steam or air-chamber e. suilicient amount of spongeto entirely till the same, as its porous nature easily admits of thefree passage or circulation'of steam; and in the watcrlchamber ofvessels I place enough sponge to insure the retention of enough of thewater or other liquid to dampen whatever charge of powder or likematerial that may be introduced therein. y

have lately invented a steam-safe, for which I have applied for LettersPatent. Inthe water-chambers provided by my mode of manufacture it wouldbe practicable to place enough sponge to entirely ill the same, if atube reaching from the common centre of each water-chamber to any pointwithout the same were usedinsteadr oi' my iicxible tube and buoy. Withthem the sponge would have to be placed about the sides of thewaterchambers, so as to permit the operation of the said tube and buoyfor conducting oit` any steam or vapor that might be generated in saidchambers, as would the tube first instanced.

Having thus fully described my invention, I wish it to be clearly aadfully understood that I do not vconfine the use or application of myinvention to steam-safes, or those of any particular make, nor do Iconfine myself to the use of sponge, for any other article of a similarnature may be used 'with advantage. What I- do claim, and desire tosecure by Letters Patent, is I i The use of sponge as a lling for a safeor other structure of a similar nature, or any other porous andabsorbent substance that is its substantial equivalent, as and for thepurpose herein set forth.

The above specification of my said invention signed and `witnessed atBoston this twenty-rst (21st) day of June, A. D. eighteen hundred andsixty-seven (1867.)

H. H. BRYANT. Witnesses C. W. BALDWIN, Giras, L. TURNER

